نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارمند
2 عضو هیات علمی دانشگاه گیلان
3 دانشکده علوم کشاورزی دانشگاه گیلان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In order to investigate the effect of weed management method on yield and yield components of lentil, this study was conducted as a factorial in a randomized complete block design with three replications. Experimental factors consisted of lentil genotypes (Kimia cultivar and landrace of lentil) and weed management programs (twice and one-time hand weeding, pendimethalin+weeding, pendimethalin + pyridate, pyridate, and weed infested control). The results showed that plant height, number of branches per plant, biological yield, seed yield, number of pods per plant, and 1000-seed weight in Kimia cultivar were more than those in landrace of lentil, while the harvest index of Kimia cultivar was lower than the landrace of lentil. In both genotypes, full-season weedy treatments comparing to twice hand weeding caused higher height, decreased the number of branches per plant, biological yield, and seed yield. The maximum biological yield was associated with twice hand weeding or application of pendimethalin+pyridate herbicides; however the highest seed yield of both genotypes observed in twice hand weeding and then with application of pendimethalin+pyridat. The minimum yield was recorded in weed infested condition. The highest weeds density and dry weight were related to weed infested treatments and the lowest values were related to twice hand weeding treatments. Application of herbicides was not as effective as twice hand weeding in weed control. Generally, twice hand weeding could be recommended for limited cultivation areas, while appropriate chemical weed management requires more evaluation of available herbicides, and may even involving registeriation of new and effective herbicides.
کلیدواژهها [English]
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